Mineral Specimens. Magnatite Strongly Magnetic Form of Iron Ore.

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Presentation transcript:

Mineral Specimens

Magnatite Strongly Magnetic Form of Iron Ore

 Hardness 1- 2

Pyrite Brass Yellow Cubic “Fool’s Gold” Form of Iron Ore

Chalcopyrite Yellow Brass Purple “Peacock Ore” Form of Iron Ore

Galena Gray S.G. = 7.5 Cubic Form of LEAD Ore

Limonite Yellow-brown to rust Hardness = 5.5 Form of Iron Ore

hematite Red to Brown Streak Form of Iron Ore Shiny when polished

Orthoclase Cleavage Planes at 90 

ORTHOCLASE (cont)

Quartz HEXAGONAL 6 Crystals Shell-like Fracture

Citrine Amethyst Rose Smoky

Olivine Shades of Green Peridot birthstone

Halite Colorless to White Salty Taste

Calcite Hardness = 3 “Scale” in water Triclinic

Calcite may DOUBLE REFRACT

Gypsum Hardness = 2

Talc Hardness = 1 Greasy luster

Muscovite Cleavage in flat sheets

Fluorite 8 sided cleavage

Fluorite samples

Augite 2 Cleavage 90  Black

Corundum HEXAGONAL 6 crystals Hardness = 9 Red = RUBY Other = Sapphire

Garnet Reddish Brown Brittle

Shell-like Fracture Petrified Wood

Black Cleavage in flat sheets

Shell-like Fracture

minerals NATURAL LIGHT UV Light